CN221093955U - Capacity expansion system of sewage treatment plant - Google Patents
Capacity expansion system of sewage treatment plant Download PDFInfo
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- CN221093955U CN221093955U CN202322499197.5U CN202322499197U CN221093955U CN 221093955 U CN221093955 U CN 221093955U CN 202322499197 U CN202322499197 U CN 202322499197U CN 221093955 U CN221093955 U CN 221093955U
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- Prior art keywords
- tank
- sewage treatment
- treatment plant
- mbr
- capacity expansion
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- 239000010865 sewage Substances 0.000 title claims abstract description 27
- 239000012528 membrane Substances 0.000 claims abstract description 20
- 238000004659 sterilization and disinfection Methods 0.000 claims abstract description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 14
- 230000003647 oxidation Effects 0.000 claims abstract description 10
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 10
- 238000004062 sedimentation Methods 0.000 claims abstract description 8
- 239000004576 sand Substances 0.000 claims description 6
- 230000015271 coagulation Effects 0.000 claims description 3
- 238000005345 coagulation Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 8
- 230000008901 benefit Effects 0.000 abstract description 4
- 238000012423 maintenance Methods 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 230000009466 transformation Effects 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000005273 aeration Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
Abstract
The utility model discloses a capacity expansion system of a sewage treatment plant, which comprises a pretreatment tank, a biochemical tank, a secondary sedimentation tank, a first advanced treatment tank and a disinfection tank, wherein an MBR curtain type membrane is arranged in the biochemical tank, and a water outlet pipe of the MBR curtain type membrane is communicated with the disinfection tank. According to the utility model, a large-scale device is not required to be added outside the existing equipment, the existing sewage treatment plant is not required to stop production, the MBR process and the oxidation ditch process are effectively combined, a processing unit with a larger size is not required to be added, the advantage of no terminal circulation of the oxidation ditch is fully exerted, the risk of MBR membrane blockage is reduced, the system treatment efficiency is improved, and the operation and maintenance cost is reduced.
Description
Technical Field
The utility model relates to the field of sewage, in particular to a capacity expansion system of a sewage treatment plant.
Background
The capacity expansion of the sewage treatment plant means that the treated water volume of the existing sewage treatment plant reaches the originally designed water volume, but the water inflow is continuously increased, the capacity of the existing treatment equipment cannot meet the requirements, and technical transformation and expansion are needed.
New sewage treatment plants are built or the capacity of the existing urban sewage treatment plants is expanded. The former is technically simple but economically costly; the latter can fully utilize the existing equipment, carry on the submerged transformation and adopt the new advanced technology, reduce newly-built treatment facility as far as possible, reduce construction cost and running cost, this is economically reasonable, as the preferred scheme, but because of being limited by various conditions of the existing sewage treatment plant, especially limited by the floor space of the original sewage treatment plant, bring great difficulty to the dilatation.
The patent number 200510096196.X discloses a method for expanding the capacity of a sewage treatment plant by adopting an A/0 biological aerated filter, but the A/O biological aerated filter is additionally arranged behind a water outlet section of a secondary sedimentation tank in the patent, so that the method is not feasible when the sewage treatment plant has no capacity expanding area.
Disclosure of utility model
The utility model aims to provide a capacity expansion system of a sewage treatment plant.
The utility model has the innovation points that a large-scale device is not required to be added outside the existing equipment, the existing sewage treatment plant is not required to stop production, the MBR process and the oxidation ditch process are effectively combined, a processing unit with a larger size is not required to be added, the advantage of endless circulation of the oxidation ditch is fully exerted, the risk of MBR membrane blockage is reduced, the system treatment efficiency is improved, and the operation and maintenance cost is reduced.
In order to achieve the above purpose, the technical scheme of the utility model is as follows: the utility model provides a sewage treatment plant dilatation system, includes pretreatment tank, biochemical pond, secondary sedimentation tank, advanced treatment tank, disinfection pond, be equipped with MBR curtain formula membrane in the biochemical pond, the outlet pipe and the disinfection pond intercommunication of MBR curtain formula membrane.
Further, a second advanced treatment tank is arranged between the water outlet of the MBR curtain type membrane and the water inlet of the disinfection tank.
Further, the biochemical tank is an oxidation ditch. The MBR curtain type membrane and the oxidation ditch are combined, and the lower part of the MBR curtain type membrane is provided with an aeration structure, so that the curtain type membrane is always in shaking, is not easy to block, and is loose relative to the flat plate membrane, and sludge is not easy to block.
Further, the pretreatment tank is a rotational flow sand setting tank.
Further, the first advanced treatment tank and the second advanced treatment tank are both magnetic coagulation sedimentation tanks.
Further, a sand filter is arranged between the first advanced treatment tank and the disinfection tank.
The beneficial effects of the utility model are as follows:
The capacity-expansion transformation structure in the utility model does not need to stop production of the sewage treatment plant and does not influence the economic benefit of the current sewage treatment plant.
According to the utility model, the occupied area is not required to be increased outside the existing sewage equipment, only the MBR curtain type membrane is required to be arranged in the biochemical tank, the MBR process and the oxidation ditch process are effectively combined, a new large-size processing unit is not required to be added, the advantage of endless circulation of the oxidation ditch is fully exerted, the risk of MBR membrane blockage is reduced, and therefore, the system treatment efficiency is improved, and the operation and maintenance cost is reduced.
3. The utility model has less civil engineering quantity, thus greatly shortening the construction period, having convenient installation and higher flexibility and saving investment.
Drawings
Fig. 1 is a schematic structural view of the present utility model.
Detailed Description
The technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings.
Example 1: a capacity expansion system of a sewage treatment plant comprises a pretreatment tank 1, a biochemical tank 2, a secondary sedimentation tank 3, a first advanced treatment tank 4 and a disinfection tank 5, wherein the pretreatment tank 1 is a rotational flow sand setting tank, and the biochemical tank 2 is an oxidation ditch. An MBR curtain type membrane 6 is arranged in the biochemical tank 2, and a water outlet pipe of the MBR curtain type membrane 6 is communicated with the disinfection tank 5. A second advanced treatment tank 7 is arranged between the water outlet of the MBR curtain type membrane 6 and the water inlet of the disinfection tank 5. The first advanced treatment tank 4 and the second advanced treatment tank 7 are both magnetic coagulation sedimentation tanks. A sand filter 8 is also arranged between the first advanced treatment tank 4 and the disinfection tank 5.
When in work, water is discharged from the biochemical tank 2 through a conventional route, and water is discharged from the MBR curtain type membrane 6 through a branch route; the original system and the newly added system are operated in parallel.
The described embodiments are only some, but not all, embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Claims (6)
1. The utility model provides a sewage treatment plant dilatation system, includes pretreatment tank, biochemical pond, secondary sedimentation tank, advanced treatment tank, disinfection pond, its characterized in that is equipped with MBR curtain membrane in the biochemical pond, the outlet pipe and the disinfection pond intercommunication of MBR curtain membrane.
2. The capacity expansion system of the sewage treatment plant according to claim 1, wherein a second advanced treatment tank is arranged between the water outlet of the MBR curtain type membrane and the water inlet of the disinfection tank.
3. The capacity expansion system of sewage treatment plant according to claim 1, wherein the biochemical tank is an oxidation ditch.
4. The capacity expansion system of sewage treatment plant according to claim 1, wherein the pretreatment tank is a cyclone sand basin.
5. The capacity expansion system of sewage treatment plant according to claim 2, wherein the first advanced treatment tank and the second advanced treatment tank are both magnetic coagulation sedimentation tanks.
6. The capacity expansion system of sewage treatment plant according to claim 1, wherein a sand filter is further arranged between the first advanced treatment tank and the disinfection tank.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221093955U true CN221093955U (en) | 2024-06-07 |
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| GR01 | Patent grant |